{
  "features": [
    {
      "name": "age",
      "mean_abs_impact": 0.28
    },
    {
      "name": "systolic_bp",
      "mean_abs_impact": 0.21
    },
    {
      "name": "creatinine",
      "mean_abs_impact": 0.17
    },
    {
      "name": "heart_rate",
      "mean_abs_impact": 0.14
    },
    {
      "name": "bmi",
      "mean_abs_impact": 0.11
    },
    {
      "name": "o2_saturation",
      "mean_abs_impact": 0.09
    }
  ],
  "note": "Placeholder SHAP summary generated by shap_stub."
}